Quartetto by Roberto Tognon
The Quartetto is the natural 4-channel evolution of Roberto Tognon’s flagship Quattro — engineered to deliver similar sonic performance at a more accessible price point, without compromising the philosophy of maximum sound quality. Born from over one year of dedicated research and development, the Quartetto brings Tognon’s signature approach to circuit design into a versatile 4-channel platform perfectly suited for front stage, full-range, and SQ competition car audio systems.
Where most car amplifiers prioritize raw wattage, the Quartetto prioritizes accuracy. With <0.005% THD+N, a signal-to-noise ratio exceeding 105dB, and a frequency response stretching to 150kHz, the Quartetto resolves fine musical detail that lesser amplifiers simply cannot reproduce. The result is a soundstage with precise imaging, natural timbre, and effortless dynamic range — the hallmarks of a true audiophile car amplifier.
Proudly handcrafted in Italy — In stock and shipping to USA, Canada, and Mexico
Product Overview
SANKEN audio power stage
High current power MOSFETs for single pair drive
WURTH capacitors for power stage and audio stage
Gold-plated PCB
Nichicon MUSE / ELNA Cerafine audiophile capacitors
CNC-milled aluminum chassis
High-quality gold-plated RCA connectors
OLED display for managing settings
Input sensitivity adjustable by number or by voltage
Technical Specifications
Power Output
4 channels @ 4Ω — 4 x 125W RMS
4 channels @ 2Ω — 4 x 200W RMS
2 channels bridged @ 4Ω — 2 x 400W RMS
Electrical
Frequency Response: 4Hz – 150kHz (–3dB)
THD+N (20Hz–20kHz @ 1W): <0.01%
THD+N (1kHz @ 5W): <0.005%
Signal to Noise Ratio: >105dB
Max Input Signal: 10 Vrms (30Vpp)
Input Impedance: >20kΩ // 220pF
Working Voltage: 11–15.5V DC
Current Draw (typical 4ch @ 4Ω): 15A
Current Draw (max 4ch @ 4Ω): 40A
Idle Current (typical): 1.8A
Standby Current: <0.9 mA
Remote Control Current: 0.015A
Display Monitoring
Voltage IN • Chassis Temperature • Channel Level by Number
Channel Level by Sensitivity • Hardware Version • Serial Number • Setup Color
Physical
Dimensions: 320mm x 205mm x 80mm
Weight: 10.58 lbs
Operating Temperature: 0–50°C
Over-Temperature Protection: 85°C (±5%)
